Fixed shell.py to work with the new urwid.MainLoop().
Fixed shell.py to work with the new urwid.MainLoop().

rndusr/urwid,Julian/urwid,wardi/urwid,foreni-packages/urwid,hkoof/urwid,tonycpsu/urwid,foreni-packages/urwid,rndusr/urwid,tonycpsu/urwid,mountainstorm/urwid,inducer/urwid,harlowja/urwid,inducer/urwid,Julian/urwid,hkoof/urwid,wardi/urwid,zyga/urwid,wardi/urwid,hkoof/urwid,bk2204/urwid,urwid/urwid,douglas-larocca/urwid,urwid/urwid,harlowja/urwid,mountainstorm/urwid,inducer/urwid,foreni-packages/urwid,Julian/urwid,douglas-larocca/urwid,tonycpsu/urwid,ivanov/urwid,ivanov/urwid,douglas-larocca/urwid,drestebon/urwid,mountainstorm/urwid,zyga/urwid,ivanov/urwid,bk2204/urwid,drestebon/urwid,westurner/urwid,urwid/urwid,bk2204/urwid,westurner/urwid,drestebon/urwid,harlowja/urwid,zyga/urwid,westurner/urwid,rndusr/urwid